A kind of air rudder rudder core excitation test method

Abstract

The invention provides a method for testing core excitation of an air rudder. The method adopts a special core test tool of the air rudder to install the core of the air rudder on a test workbench, and arranges a strain gauge and a displacement sensor on or around the core of the air rudder, so that, when the exciter on the test bench exerts an exciting action on the core of the air rudder, the strain gauge arranged on the air rudder and the displacement sensor arranged around test the strain of the core of the air rudder and the overall deformation, thereby providing reliable support for thedesign of the core of the air rudder and subsequent processes.

Description

technical field [0001] The invention relates to an air rudder rudder core excitation test method, in particular to an air rudder rudder core excitation test method capable of changing the position of the excitation force, and belongs to the technical field of mechanical component testing. Background technique [0002] The air rudder is the control and execution mechanism of the flight path of the aircraft. By changing the angle of the air rudder during the flight, the aircraft can be lifted, pitched or yawed. The aerodynamic shape of the air rudder directly affects the control accuracy of the aircraft, and is an important part of the aircraft. [0003] The rudder core of the air rudder is generally welded in the form of the rudder core skeleton and the rudder core skin, and the rudder core is generally made of titanium alloy; when the aircraft flies in the atmosphere, affected by "aerodynamic heating", the temperature of the aerodynamic rudder will increase. Therefore, the ...

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Problems solved by technology

[0003] The rudder core of the air rudder is generally welded in the form of the rudder core skeleton and the rudder core skin, and the rudder core is generally made of titanium alloy; when the aircraft flies in the atmosphere, affected by "aerodynamic heating", the temperature of the aerodynamic rudder will increase. Therefore, the metal rudder core is covered with a heat-resistant jacket. The heat-resistant jacket is generally made of composite materials with high temperature resistance, ablation resistance, erosion resistance, and thermal shock resistance. Composite materials are relatively brittle, so Before the preparation of the air rudder heat shield, it is very necessary to test the stimulated structural strength and deformation of the air rudder rudder core, so as to avoid unnecessary damage to the heat shield layer caused by the air rudder core under the air rudder flight excitation state. damage, less attention has been paid to this issue in the prior art

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